Avatar name: Mara
Rank: Science Officer
Mara (Susan Johnson) at U.S.S. Enterprise
First Appearance: "Day of the Dove"
Female Klingon science officer and, in 2268, Kang's wife. She and Kang captured the Enterprise. She was the first to trust humans after being saved from Chekov.


Avatar name: Vixis
Rank: First Officer
Vixis (Spice Williams) at Klingon bird-of-prey
First Appearance: "Star Trek V: The Final Frontier"
A striking female Klingon warrior, first officer aboard the Klingon bird-of-prey commanded by Captain Klaa.


Avatar name: Valkris
Rank: Merchant
Valkris (Cathie Shirriff) at space
First Appearance: "Star Trek III: The Search for Spock"
Female Klingon who copied top-secret data on Project Genesis from the Federation and provided it to the Klingons.


Avatar name: Lursa
Rank: Klingon Warrior
Lursa (Barbara Marsh) at space
First Appearance: "Redemption, Part 1"
One of the sisters of the Duras Family that collaborated with the Romulans to start a civil war. Lursa was killed when her ship attacked the Enterprise in 2371.


Avatar name: B'Etor
Rank: Klingon Warrior
B'Etor (Gwynyth Walsh) at space
First Appearance: "Redemption, Part 1"
See above.


Avatar name: Azetbur
Rank: Chancellor
Azetbur (Rosana DeSoto) at Qo'noS
First Appearance: "Star Trek VI: The Undiscovered Country"
Daughter of Gorkon, Azetbur was named chancellor of the Klingon High Council after her father's death in 2293. Determined to finish her father's work, Azetbur finished negotiating the now famous Khitomer peace accords.


Avatar name: K'ehleyr
Rank: Ambassador
K'Ehleyr (Suzie Plakson) at the morgue
First Appearance: "The Emissary"
Romantically linked to Worf, they have a son Alexander. Was killed by Duras.


Avatar name: Bael
Rank: Civilian
Ba'el (Jennifer Gatti) at Carraya System
First Appearance: "Birthright, Part 1"
A half-Klingon, half-Romulan woman born and raised at a secret prison camp in the Carraya System, where Klingons and Romulans lived peacefully together following the Khitomer massacre of 2346. The daughter of Klingon woman Gi'ral and Romulan officer Tokath.


Avatar name: Grilka
Rank: Klingon Warrior
Grilka (Mary Kay Adams) at Qo'noS
First Appearance: "The House of Quark"
Wife to the head of the House of Kozak, a family of some import in the Klingon High Council. Grilka was widowed when Kozak was killed in 2371 aboard station Deep Space 9. Because initial reports indicated Kozak was killed in combat, Grilka was forced to perform the brek'tal ritual with her husband's killer, in order to preserve her family. Quark, acting briefly as head of the House, made arrangements with the Klingon High Council, so that Grilka could lead the family herself.


Avatar name: Kahlest
Rank: Old Woman
Kahlest (Thelma Lee) at Qo'noS
First Appearance: "Sins of the Father"
Worf's nanny on Khitomer and the object of K'mpec's advances. She was a survivor of the Romulan attack in 2346. Picard tracked her down in 2366 to save Worf.


Avatar name: Kurak
Rank: Scientist
Kurak (Tricia O'Neil) at U.S.S. Enterprise-D
First Appearance: "Suspicions"
Female Klingon warp-field scientist attending a metaphasic shield demonstration on the Enterprise in 2369. After the shield's Ferengi inventor was killed, Kurak seemed guilty.


Avatar name: B'Elanna Torres (Klingon)
Rank: Klingon
B'Elanna Torres (Roxann Dawson) at science lab
First Appearance: "Faces"
A Vidiian scientist split B'Elanna's DNA and created a human and Klingon of her so he could experiment on the Klingon. They were rescued and the Doctor was able to reintigrate B'Elanna's DNA again.


Avatar name: Kathryn Janeway (Klingon)
Rank: Captain
Kathryn Janeway (Kate Mulgrew) at the holodeck
First Appearance: "The Killing Game, Part 1"
Janeway, as a Klingon, in a holodeck simulation created by the Hirogen.


Avatar name: N'Garen
Rank: Soldier
N'Garen (Gabrielle Union) at I.K.S. Rotarran
First Appearance: "Sons and Daughters"
Klingon soldier, daughter of Tse'Dek. She served as weapons officer under Worf and Martok for the I.K.S. Rotarran's escort mission to Donatu V in 2374.


Avatar name: Miral
Rank: Ensign
Miral Paris (Lisa Locicero) at Qo'noS
First Appearance: "Endgame, Part 1"
Daughter of Tom Paris and B'Elanna Torres in an alternate future. In this timeline, Voyager eventually returned to Earth, but at great cost to the crew. Admiral Janeway, seeking to rectify her decision that set these events in motion, enlisted the quarter-Klingon Miral, a Starfleet ensign, in a complex plan to obtain a certain device from Klingon High Council member Korath.


Avatar name: Klaa
Rank: Captain
Klaa (Todd Bryant) at Qo'noS
First Appearance: "Star Trek V: The Final Frontier"
Klingon warrior and bird-of-prey commander. In 2287 Klaa was ordered to Nimbus III to free General Korrd.


Avatar name: Kruge
Rank: Commander
Kruge (Christopher Lloyd) at Genesis Planet
First Appearance: "Star Trek III: The Search for Spock"
Klingon bird-of-prey captain in 2285 tracking the Project Genesis weapon. Kruge's quest destroyed the Grissom and executed David Marcus. Kirk killed Kruge by dropping him into a lava pit.


Avatar name: Maltz
Rank: Transporter Chief
Maltz (John Laroquette) at prison
First Appearance: "Star Trek III: The Search for Spock"
Klingon officer serving under Kruge in 2285. Maltz was captured after Kirk took Kruge's bird-of-prey following the death of Kruge and the other Klingon crew members.


Avatar name: Chang
Rank: General
Chang (Christopher Plummer) at space
First Appearance: "Star Trek VI: The Undiscovered Country"
Involved in a Klingon/Federation dissident movement to derail a peace treaty between the Federation and Klingons. Commander of a Klingon prototype Bird of Prey that could fire while being cloaked.


Avatar name: Gorkon
Rank: Chancellor
Gorkon (David Warner) at the morgue
First Appearance: "Star Trek VI: The Undiscovered Country"
Chancellor of the Klingon High Council in the 2290's, Gorkon stopped the cycle of bad relations between the Klingon Empire and the Federation with a peace initiative. Due to this, he was assassinated by political opponents in 2293.


Avatar name: Alexander (child)
Rank: Civilian
Alexander Rozhenko (Brian Bonsell) at Earth
First Appearance: "Reunion"
Born in 2366, Alexander is the son of Worf and the late Federation Ambassador K'Ehleyr. As he grew older, Alexander resented the fact that Worf left him in the care of his adoptive grandparents. His disenchantment led him to enlist in the Klingon Defense Force, where he was assigned to the I.K.S. Rotarran. He served together with Worf aboard the Rotarran, but tensions with his father led to his eventual transfer to the I.K.S. Ya'Vang.


Avatar name: Alexander (grownup)
Rank: Soldier
Alexander Rozhenko (Marc Worden) at I.K.S. Ya'Vang
First Appearance: "Reunion"
See above.


Avatar name: Kahless (TOS)
Rank: Emperor
Kahless (Bob Herron) at Excalbia
First Appearance: "The Savage Curtain"
The legendary first emperor of the Klingon Empire. An Excalbian adopted his form to represent the concept of evil.


Avatar name: Kahless (DS9)
Rank: Emperor
Kahless (Kevin Conway) at Qo'noS
First Appearance: "Rightful Heir"
The greatest warrior in all Klingon history, and founder of the Klingon Empire. A clone of Kahless was created in 2369 by the clerics of Boreth to fulfill the legendary Promise of Quin'lat, the return of Kahless. Even though the deception was discovered, the clone was installed as Emperor, the ceremonial leader of the Klingon Empire.


Avatar name: Kang (TOS)
Rank: Da'har Master
Kang (Michael Ansara) at the Albino's world
First Appearance: "Day of the Dove"
Former Klingon commander whose crew battled the Enterprise crew while both were under the influence of the Beta XXI-A Entity. Kang returns in DS9 as an old drunken warrior out to finish a blood oath he had made with Curzon Dax. He is joined by Jadzia, Koloth, and Kor. They succeed in killing the Albino, a crime-lord, in revenge for a friend. He dies after killing the Albino.


Avatar name: Kang (DS9)
Rank: Da'har Master
Kang (Michael Ansara) at the Albino's world
First Appearance: "Day of the Dove"
See above.


Avatar name: Kor (TOS)
Rank: Da'har Master
Kor (John Colicos) at space
First Appearance: "Errand of Mercy"
Kor lead the conquer of planet Organia in 2267, unaware that the Organians were non-corporeal life forms. He helped to exact vengance on the Albino. Later, he, Jadzia and Worf go on a quest to find the Sword of Kahless. During the Dominion War, Worf helped him secure a post on the Ch'Tang. He died honorably in 2375 during a battle at Trelka Five on a suicide mission aboard the Ning'tao.


Avatar name: Kor (DS9)
Rank: Da'har Master
Kor (John Colios) at space
First Appearance: "Errand of Mercy"
See above.


Avatar name: Koloth (TOS)
Rank: Da'har Master
Koloth (William Campbell) at the Albino's world
First Appearance: "The Trouble With Tribbles"
Formerly a Captain in the Klingon Defense Force, Koloth brought his crew to Deep Space Station K-7 in 2268 for rest and relaxation, unaware that the station was about to be infested with Tribbles. Koloth also returned on DS9 to exact vengeance on the Albino and died in the attempt.


Avatar name: Koloth (DS9)
Rank: Da'har Master
Koloth (William Campbell) at the Albino's world
First Appearance: "The Trouble With Tribbles"
See above.


Avatar name: Krell (TOS)
Rank: Commander
Krell (Ned Romero) at Tyree's planet
First Appearance: "A Private Little War"
Supplied villagers with weapons to use against Tyree's people.


Avatar name: Krell (DS9)
Rank: Klingon Warrior
Krell (some guy with a lot of makeup on) at Deep Space 9
First Appearance: "The Way of the Warrior, Part 2"
Friend of Worf's father, Mogh.


Avatar name: Korax
Rank: Soldier
Korax (Michael Pataki) at Deep Space Station K-7
First Appearance: "The Trouble With Tribbles"
Klingon officer who precipitated a brawl at Deep Space Station K-7 in 2267 by repeatedly insulting Starfleet personnel, including Pavel Chekov and Montgomery Scott.


Avatar name: Gowron
Rank: Chancellor
Gowron (Robert O'Reilly) at the morgue
First Appearance: "Sins of the Father"
Became Chancellor of the Klingon High Council in the 2367, following the death of K'mpec. Gowron was a very politically motivated leader, often choosing what would make him look good as opposed to what was best for the empire. Gowron was killed by Worf in 2375, when the Chancellor refused to back down from an unwise military strategy against the Dominion.


Avatar name: Martok
Rank: Chancellor
Martok (J.G. Hertzler) at Qo'noS
First Appearance: "The Way of the Warrior, Part 1"
Martok was a General in the Klingon Defense Forces for several years. He was captured by the Dominion and held in a prison camp while a changeling impersonated him for several months. After Gowron's death, Worf ceded the position of chancellor to Martok, who, accepted.


Avatar name: Kurn
Rank: Commander
Kurn (Tony Todd) at Qo'noS
First Appearance: "Sins of the Father"
The younger brother Worf never knew he had, Kurn was born barely a year before their parents were killed amid the Khitomer massacre in 2344. Worf did not learn of it until Kurn served as an exchange officer on the Enterprise in 2366. At 21, Kurn's identity was kept secret as he stood as Worf's cha'DIch to argue the false treachery pinned on their father for Khitomer's betrayal, but he was nearly killed by the assassins of Duras, the true traitor's powerful son, and he recovered quickly. He had a seat on the High Council by late 2369 and broke with his brother over Qo'noS' Cardassian invasion, but then argued against breaking the Khitomer Accords a year later.


Avatar name: L'Kor
Rank: Survivor
L'Kor (Richard Herd) at Carraya System
First Appearance: "Birthright, Part 1"
A Klingon survivor of the 2346 Khitomer massacre. Though thought dead, he was taken prisoner by Tokath and lived in a secret Romulan prison camp in the Carraya System.


Avatar name: Toq
Rank: Civilian
Toq (Sterling Macer Jr.) at Carraya System
First Appearance: "Birthright, Part 1"
Klingon male, the offspring of Khitomer Massacre survivors. Toq was raised in the insular world of the Carraya System prison camp and was eager to leave with Worf in 2369.


Avatar name: Klaang (1)
Rank: Courier
Klaang (Tommy Lister Jr.) at Qo'noS
First Appearance: "Broken Bow"
The Enterprise was assigned to return Klaang to his homeworld, but the Klingon was kidnapped from the ship by the Suliban. Captain Archer and his crew managed to learn the truth and save Klaang, successfully delivering him to his homeworld. Once there, the High Council found the necessary proof of the conspiracy hidden in Klaang's DNA.


Avatar name: Klaang (2)
Rank: Courier
Klaang (Tommy Lister Jr.) at Qo'noS
First Appearance: "Broken Bow"
See above.


Avatar name: Bukah
Rank: Officer
Bu'kaH (Michelle C. Bonilla) at Qo'noS
First Appearance: "Sleeping Dogs"
Officer aboard the Raptor, rescued by Enterprise.


Avatar name: Klingon Chancellor
Rank: Chancellor
Klingon (Peter Henry Schroeder) at Qo'noS
First Appearance: "Broken Bow"
Chancellor of the Klingon High Council.


Avatar name: Klingon Captain (1)
Rank: Captain
Klingon (Vaughn Armstrong?) at Qo'noS
First Appearance: "Sleeping Dogs"
Captain of the Klingon vessel rescued by Enterprise.


Avatar name: Klingon Captain (2)
Rank: Captain
Klingon (Michael Garvey) at Qo'noS
First Appearance: "Bounty"
Klingon Captain who sent a bounty hunter after Archer.


Avatar name: Benjamin Sisko (Klingon)
Rank: Spy
Benjamin Sisko (Avery Brooks) at Ty'Gokor
First Appearance: "Apocalypse Rising"
Captain Sisko surgically altered to look like a Klingon to uncover a Changling in the Klingon High Council.


Avatar name: Miles O'Brien (Klingon)
Rank: Spy
Miles O'Brien (Colm Meaney) at Ty'Gokor
First Appearance: "Apocalypse Rising"
Chief O'Brien surgically altered to look like a Klingon to uncover a Changling in the Klingon High Council.